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【简答题】
设计一个立式圆筒形容器,用于储存氮气,上下采用标准椭圆形,材料为 16MnR ,内径为 1200mm ,设计压力为 1.75MPa ,设计温度为 50 °C ,则: <1> 计算筒体及的名义厚度。 <2> 若对该容器进行液压试验,试验压力是多少?是否满足设计规范的要求? 已知: C 1 =0.3mm , C 2 =1mm , φ =0.8 。 16MnR 材料的应力 钢板厚度 /mm s b /MPa s s /MPa 应力 /MPa ≤20 °C 100 °C 150 °C 6~16 510 345 170 170 170 16~36 490 325 163 163 163 36~60 470 305 157 157 157
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【单选题】It can be inferred that ______.
A.
the man was put into prison
B.
the man was sued for stealing
C.
the man convinced the policeman of the truth at the airport
D.
the girl was arrested at last
【单选题】On hearing of the case some time later， Conan Doyle was convinced that the man was not guilty， and immediately went to work to ascertain the truth.
A.
explore
B.
obtain
C.
verify
D.
search
【单选题】The young man was under the ______ that he was Napoleon.
A.
fantasy
B.
imagination
C.
fallacy
D.
delusion
【单选题】The rain was so heavy that the man was wet to the skin his whole body was______ and trembling.
A.
stiff
B.
straight
C.
steady
D.
hard
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